Water pump stealth failure?

> IMHO the gauge is almost redundant. If the fan is cycling on and
> (more importantly) off and it's the second stage (kinda loud) versus
> the third stage (really loud) then everything is ok.
A bit off topic: what are the alternatives of fixing the gauge itself?
I have one which shows temperature probably according to moon phases.
Replace whole dashboard?
Snoopy
\/noway.net/\